Feb 10, 2026
A gas generator includes a housing, an ignition device attached to one end side of the housing, a combustion chamber, a diffuser portion formed on the other end side and including a closed end, an open end, and a side wall positioned between the closed end and the open end, a plurality of gas discharge ports formed in the diffuser portion and including a first gas discharge port having a short distance from the combustion chamber and a second gas discharge port having a long distance from the combustion chamber, and a total opening area of the first gas discharge port and a total opening area of the second gas discharge port are different from each other, and a filter accommodated in the accommodating space, the filter extending from a side of the open end toward a side of the closed end in the diffuser portion.
Jul 22, 2025
An assembly directing gas to an action of a firearm has a barrel with a bore and a forward sealing surface. A gas block has a bore, a port for directing gases from the block bore through the block port, a rearward sealing surface for sealingly mating with the forward sealing surface of the barrel, and a forward sealing surface. A component has a bore and is attached to a forward end of the barrel, the component bore being in fluid communication with the barrel bore. At least one port communicates the component bore with the block port, the component having a rearward sealing surface for sealingly mating with the forward sealing surface of the gas block. A portion of the component rearward of the rearward sealing surface is received within the bore of the gas block. The barrel and component cooperate to sealingly retain the gas block therebetween.
May 20, 2025
An assembly for directing propellant gas to an action of a firearm includes a barrel and a gas block. The barrel has a plurality of gas ports that communicate with the bore of the barrel. The barrel and the gas block define a passage that receives pressurized propellant gas from the bore by way of the barrel gas ports, and directs the propellant gas to a gas port of the gas block. The plurality of barrel gas ports and the passage act as a manifold in which the propellant gas is taken from multiple locations within the barrel, combined into a single flow, and directed into the gas block via the gas block gas port. The pressurized gas is then routed to an action of the firearm by way of a gas tube and a gas key.
